H:\Bitcoin>dir
Volume in drive Q is BITCOIN
Volume Serial Number is XXXX-XXXX
Directory of Q:\Bitcoin
2013-02-21 09:31 AM
2013-02-21 09:31 AM
2012-09-18 10:19 AM 0 .lock
2012-09-18 13:57 PM 3,850,240 addr.dat
2012-09-27 12:05 PM 131,072 backup.dat
2012-09-18 13:25 PM 2,097,384,811 blk0001.dat
2013-01-04 10:34 AM 2,097,346,788 blk0002.dat
2013-02-20 22:13 PM 1,561,011,203 blk0003.dat
2013-02-20 22:18 PM 1,809,104,896 blkindex.dat
2013-02-20 22:28 PM
2013-02-21 09:22 AM
2013-02-20 22:18 PM
2012-09-24 08:41 AM 0 db.log
2013-02-21 08:31 AM 564,356 debug.log
2013-02-21 09:31 AM 956,384 peers.dat
2013-02-21 09:18 AM 172,032 wallet.dat
What can I safely delete? I highlighted in bold and color what I think can be deleted. Can someone confirm this?